有那么多人的公共汽车、地铁和轻轨列车经常挤满了人。

There are so many people that the buses the underground and the light rail trains are often crowded with people.

现在世界各地“中国制造”的东西越来越多，如今中国制造的轻轨列车也敲开了欧洲市场的大门。

Made-in-China light rail train has tapped into the European market, its manufacturer has announced.

我发誓不坐小汽车，可毕竟没说不用公共交通，洛杉矶的公共交通体系还是很便捷的，你可以把自行车搬上轻轨列车和所有的公交车。

I had sworn off cars, after all, not public transportation, which in Los Angeles proved to be a nimble system that welcomes bikes on the light rail trains and on all buses.

引入等效刚度系数，将轮缘橡胶等效为三向弹簧，从而简化新型轻轨列车系统的力学模型。

Through this equivalent stiffness, the mechanical model of wheel-tract system in the new light train with rubber wheels can is simplified by treated the rubber wheel as a tri-axial spring.